Spool



w. J. PASINSKI SPOOL June 15, 1943.

Original Filed June 10, 1937 m r 22 10 W ATTORNEY Patented June 15, 1943 SPOOL Walter J. Pasinski, Howell, lVliclL, assignor to Burroughs Adding Machine Company, Detroit, Mich, a corporation of Michigan Original application June 10, 1937, Serial No.

147,430, new liatent No. 2,264,855, dated Decemher 2, 1-941. Divided and this application January i, 1M1, Serial No. 373,183

.3 Claims.

This invention relates to cash registers, andmore particularly to an improved paper equipment or mechanism for supplying, feeding, storing and controlling a record strip of paper.

The paper equipment is of the type in which the paper is moved from a visible to a printing position and returned to visible position during each machine operation, as disclosed in Patent No. 2,264,855, issued to me December 2, 1941, on my copending application Serial No. 147,430, filed June 10, 1937, of which the present application is a division. The machine has a paper support or table located at some distance from the printing mechanism. A paper strip passes from a sup-ply roll past the printing mechanism and over the paper table to a storage roll. Normally, the last printed entry is in visible position on the table, or through a sight opening. During each machine operation, the paper strip is moved so as to bring it to proper position relative to the printing line of the printing mechanism to enable the next entry to be properly spaced from the last. A line-spacing operation occurs automatically and, after printing occurs, the strip is returned to a visible position so that the currently printed entry is visible.

An object of the invention is to provide a very easy and eificient means for attaching the end of a paper strip to the storage roll, which means also acts automatically to align the paper to insure that the paper will wind evenly and straight upon the storage spool and that it will slide properly on the parts over which it is moved when it is shifted from visible to printing position and returned.

Other objects of the invention will become apparent hereinafter by reference to the annexed specification and drawing.

In the drawing:

Fig. 1 is an enlarged view of the essential elements of the paper mechanism in printing position;

Fig. 2 is a detail perspective view of the paper roll supporting devices with certain parts cut away.

The paper strip P passes from a rotatable paper-supply spool ll] (Fig. 1) under the stationary guiding shaft ll, past the printing line of the printing mechanism, about a stationary guide shaft l4, over the table i5, and over a stationary guide shaft It to a rotatable, paper-storage spool It. The paper strip is moved from a visible to a printing position and returned by bodily moving the supply and storage spools and by arranging them so that, as one spool moves toward one end of the table, the other spool moves away from the opposite end so that the paper strip is slid over the stationary guides and the stationary table from a visible to a printing position and then returned.

The paper spools are carried by a pair of bell crank levers 2i and 22 (Fig. 2) pivoted on a shaft 23 of the frame of the paper section. The supply spool it is rotatably mounted, on a shaft l9 carried by the forward arms of said bell crank levers and the storage spool i8 is rotatably mounted on a shaft 2 carried by the upwardly extending arms of said bell crank levers.

The supply and storage spools are moved bodily by means of an arm 25 pivoted at 21 to the machine frame and provided with a cam slot 28 engaging a stud 29 on the lever 3!] fixed to a shaft 3|. The arm 26 has a cam slot 25 cooperating with a roller 19 on the end of the, shaft ii! that is supported by the two bell cranks 2! and 22. When the lever 30 is rocked forward, as for example by depression of the amount keys, the arm 26 is rocked clockwise, whereupon the cam 2.5, acting on the roller Et rocks the bell cranks 2i and 22 counterclockwise and thus moves the storage spool l8 toward one end of the paper table !5 while the supply spoolmoves away from the printing mechanism and the opposite end of said paper table. This slides the paper strip to a position such that the entry being printed will be just below the preceding entry. The parts are timed so that, after the paper strip has been moved to printing position and while it is stationary, the printing mechanism operates to print the current entry. When the parts are released, as by release of the amount keys, they are returned to normal by means including the springs '23 and 33.

Automatic Zine spacing When the paper strip is returned from visible position, it must be line spaced and provision is made for automatically accomplishing this as follows:

Connected to the storage spool I8 (Fig. 1) is a ratchet wheel 38 engageable by a driving pawl 39 pivoted at 4| (Fig. 2) to one of the side plates A of the printing frame. Also positioned to engage the ratchet wheel 38 is a looking or blocking dog or pawl 40 pivoted at 43 to one arm of the bell crank 22. Both pawls are urged in a clockwise direction into engagement with the ratchet wheel 38 by a spring 44 tensioned between the lower ends of the two pawls.

As the storage spool I8 is rocked bodily in a counterclockwise direction to its Fig. 1 position, the ratchet wheel 38 moves with it, whereupon the driving pawl 39 engages one of the teeth of said wheel and causes the storage spool I8 to be rotated clockwise a predetermined distance, the driving pawl slipping off the ratchet wheel after the required rotation. The safety or blocking pawl 40 slides over the ratchet wheel during this operation and acts to prevent reverse rotation of the ratchet wheel 38 and storage spool I8.

The result is that, as the storage spool I8 is rocked downwardly in the operation of the mechanism for moving the paper from visible to printing position, the paper strip is advanced upward in the opposite direction the proper distance so that, when the paper strip is returned to visible position, the entry that has just been printed will be the one that is visible.

Further illustration and description of the record strip mechanism and of a cash register in which it is employed will be found in my aforementioned Patent No. 2,264,855.

Paper attachment and alignment When the paper is slid back and forth from one position to the other, it must slide in a straight line. If it tends to slew off to one side, the edge of the paper will become torn and the mechanism will not operate properly. This requires that, when the paper strip is attached to the storage spool, it be properly aligned so that it will wind on said spool in a straight, uniform manner. Novel means has been provided for enabling the paper to be attached to the storage spool in such a manner that it will automatically align itself, and this means is a very simple one that can be quite easily used by the operator without any tedious adjustment to secure proper alignment of the paper.

Referring to Fig. 2, the storage spool includes a hollow sleeve 60 which is provided with a slot 6| through which the leading or free edge of the paper strip is inserted by the operator when starting a new roll of paper on the storage spool. The edges of the slot are separated an appreciable distance near the outer ends of the slot. These edges are brought close together near the longitudinal center of the slot. In the-embodiment illustrated, this is obtained by having the trailing edge of the slot diverge from the center 62 toward the two ends of the slot, as will appear clearly from Fig. 2.

With this construction, the operator can very easily insert the paper by slipping it into one of the wider ends of the slot and moving it along the slot until it is approximately centered, after which he can turn the storage spool to start the paper Winding about the hub. As he does this, the supply spool will offer a resistance to the movement of the paper and the effect is similar to that of a crown pulley, namely, that the paper automatically aligns and centers itself so as to wind evenly on the storage spool. The inner edge of the straight end of the member 60 at the forward side of the slot keeps the end portion of the .paper strip bent inwardly over the outer edge of the humped end of the member 60 at the rear side of the slot so that the paper strip may pivot considerably on the outer corner of the hump. The construction is very simple and inexpensive, yet automatic in its operation. The end of the paper strip does not have to be cut in any special way but is simply inserted in the slot. This aligning means has been found to be a very desirable feature in paper equipment of the kind described.

I claim:

1. In a machine of the class described having means carrying a, supply of paper strip, a rotatable spool on which said strip is wound, said spool having a hub provided with a slot therein for receiving the end of said strip and providing an edge on one side of said slot over which the strip received in the slot is bent upon winding of said strip, said edge having a centrally located hump extending circumferentially of said hub, said hub having means thereon for maintaining said strip so sharply bent around said hump as to prevent said strip from slipping during initial winding of said strip.

2. In a machine of the class described having means carrying a supply of paper strip, a rotatable spool on which said strip is wound, said spool having a hub provided with a slot therein for receiving the end of said strip and providing an edge on one side of said slot over which the strip received in the slot is bent upon winding of said strip, said edge having a centrally located hump extending circumferentially of said hub, said hub providing a second edge on the other side of said slot, the central portion of said second edge being positioned sufliciently close to said hump to maintain the received strip so sharply bent around said hump as to hold the end of said strip from slipping during initial Winding of the strip.

3. In a machine of the class described having means carrying a supply of paper strip, a rotatable spool on which said strip is wound, said spool having a hub provided with a slot therein for receiving the end of said strip and providing an edge on one side of said slot over which the strip received in the slot is bent upon winding of said strip, said edge diverging away from a line parallel to the axis of said hub on both sides of a central portion of said edge to provide a blunt apex located centrally of said edge and extending circumferentially of said hub, said hub providing a second edge on the other side of said slot extending substantially parallel with the axis of said hub, the central portion of said second edge being positioned sufiiciently close to said apex to maintain the received strip so sharply bent around said apex to hold the end of said strip from slipping during initial winding of said strip.

WALTER J. PASINSKI. 

